No children received no treatment

Consultant physician Royal London Homoeopathic Hospital, London WC1N 3HR

Consultant physician Glasgow Homoeopathic Hospital, Glasgow G12 0NR

Consultant physician Bristol Homoeopathic Hospital, Bristol BS6 6JU

President Dean Faculty of Homoeopathy, London WC1N 3HT

Chairman Homoeopathic Medical Research Council, London WC1N 3HT

EDITOR,—We are surprised by the negative conclusions drawn by E S M de Lange de Klerk and colleagues after their trial of homoeopathy in recurrent upper respiratory tract symptoms in children.1 These conclusions do not seem to be justified by the data.

The most serious problem is the inadequate statistical power of the trial. Although no power calculation was presented in the paper, such a calculation was …